A Mako Shark dives, open-mouthed in the waters off of New Zealand. Makos are one of the fastest fish in the sea, capable of speed bursts up to 60mph. Of all shark species they also have one of the largest brains, relative to body size. The numbers of Makos have declined worldwide due to overfishing and the demand for shark fins. They are currently listed as vulnerable, but their population continues to spiral downwards.